Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
змий
←
Old Church Slavonic
змии
(borrowed)
←
Russian
змей
(doublet)
←
Proto-Slavic
*zmь̀jь
(derived)
→
Russian
змей
(doublet)
→
Russian
змей
(link)